Typewriting and manifolding



.11, 1945. s) H. PLUM, 2D

.TY EWRITING AND MANIFOLDING,

Filed Feb. 23, 1940 4 Sheets-Sheet 1,

INVENTOR STEPHEN IVA/IVES Pal/4Z2 7Q BY ZNEIY Dec. 11, 1945. s. H. PLUM,2D 2,390,554

TYPEWRITTING AND MANIFQLDING Filed Feb. 23, 1940 4' Sheets-Sheet 2INVENTOR Srsmsu Hnuves Pu/MZZ' ATTO NEY Dec. 1 131 945. 5, PLUM, 22,390,554

Filed Feb; 25; 1940 "I'YPEWRITING AND MANIFOLDI' 4 NNNNNN o R STEPHENHn/Nas Pm/1Z2 Patented Dec. 11, 19 45 PATENT-V ori ice TYPEWBITING ANDMANIFOLDING Stephen names Plum, II, Madison, N. I.

Application February 23, 1940, serial No. 320,398

14 Claims.

, This invention relates to a method and apparatus for typewriting andmanifolding.

One of the objects of this invention is to provide an improvedtypewriter construction of greater printing ortyping capacity, andcapable of embodiment in inexpensive, dependable and, rugged form.Another object is to provide a construction of theabove-mentionedcharacter in which manifolding or the making offcopies, such as carboncopies, will be simplified and will be carried on with greater facility,greate efficiency and greater clarity of reproduction. Another object isto provide a'method and apparatus capable of achieving reproduction asby so-called carbon or like or other transfer material, in

greater quantity or number than has heretofore been possible. Anotherobject is to provide a method and apparatus of type movement or controlfor improving generally the production of copies as by a transfermaterial, to achieve greater precision and clarity of such reproduction,and to carry out such objects by way of an ap- *paratus that will beinexpensive in construction,

efflcient in action and easy to operate. Another object is to provide amethod and apparatus for increasing the number of duplications or copiesmade by the use of a transfer material over what has heretofore beenpossible.

Another object is to carry out such objects as those noted above by wayof apparatus in which may also be embodied mechanisms or devices usuallyand by now of standard or well known construction, such as, carriageadvancing mechanism, carriage release, back spacer, etc., etc., as r areusually controlled from a standard type of keyboard and such as areusually found desirable in typewriting machines and manifolding'machines. Other objects will be in part obvious or in part pointed outhereinafter.

The invention accordingly consists in the fea tures of construction,combinations of elements,

arrangements ofparts and in the several steps and relation and order ofeach of the same to one or more of the others, all as will beillustratively described herein, and the scope of the application ofwhich will be indicated in the following claims.

In the accompanying drawings in which are shown by way of illustrationseveral of the various possible embodiments of the mechanical featuresof my invention,

Figure Us a transverse sectional view showing:

the complete apparatus;

Figure l' is a fragmentary front elevation as seen along the line l' l'*of Figure 1;

Figure 2 is a longitudinal sectional view as seen along the line 2-2 ofFigure 1;

Figure 3 is a detached schematic. perspective view on an enlarged scaleshowing one form of construction and arrangement of coacting type bars;4

Figure 4 is a plan view, with parts progressively broken away, showingone form of interrelationship between the sheets of paper and a transfermaterial;

Figure 5 is a fragmentary transverse sectional view on an 'eniargedscale showing one form of type bar action upon the stack or batch ofsheets;

Figure 6 is a view like that of Figure 5 showing a modified form ofconstruction and arrangement;

Figure 7 is a view like that of Figure 5 showing another form ofarrangement; a Figure 8 is a detached fragmentary end elevationillustrating a form and method of shift for selection between upp r andlower case.

Similar reference characters refer to similar parts throughout theseveral views in the drawings.

Referring first to Figures 1 and 2, I prefer to embody the features ofmy invention in such a way that any type or arrangement of keyboard andassociated parts thereof, such as are available in several standardforms, may be employed; indicated generally at It in Figure l :is aframe 30 providing at the lower forward portion thereof a suitableopening or space in or at which are exposed the keys, preferablyarranged in any suitable orstandard arrangement to form a keyboardgenerally indicated at 15. This keyboard, aside from including keysbearing the letters of the alphabet, numbers, punctuation marks,*and*controls, keys, devices and related mechanism,.

or vice versa. Accordingly, I have not shown such other keys, controlsand related mechanisms in the drawings, and have preferred to confinethe 0 drawings and the ensuing description only-to such mechanism orparts appropriate to typify the carryingout in practical form of thevarious features of my invention.

To better illustrate the various features of my 56 invention, let it beassumed that the apparatus appropriate to traversing the web made up ofany desired number of individual and superimposed sheets of paper; inFigure 4 such a web is generally indicated at H, being in widthappropriate to the capacity of the machine as towidth and by way ofillustration the individual sheets S, S S, S etc., superimposed uponeach other may be of a width of say eight inches. This composite web maybe of any suitable length and usually and preferably is, throughout itslength, subdivided or sectlonalized by transverse perforations spacedalong at, for example, ten inch intervals, each section thusrepresenting the size of a letter-head, bill-head, or the like.Preferably, the web I! is initially folded back and forth upon itselfalong these lines of perforation, thusto form a stack of any suitablethickness or height and in Figure 1 I have indicated at It! a portion ofsuch a stack. It is preferably in such stacked form that the compositeweb" is furnished or made available and in such case I prefer to providethe apparatus with a magazine 20 (Figures 1, and 2) for receiving such astack [8, thus to charge the apparatus with the paper to be employed. i

From the magazine 20 the web is fed and supplied in preferably an upwarddirection to the printing point and wher such a magazinels to beemployed I preferably ar ange it as part of a carriage, generallyindicat d at 19, so that it will partake of step-by-step movement, sayto the left, in responseto the actuation of the keys of the keyboard.And in such case I prefer to provide guideways or rails 2|, 22 thatextend in spaced relation through the frame 16, the end members l6 andWei which ar provided with suitable openings 23, 23 through which theparallel spaced rails 2 I, 22 extend and through which also the carriagel9 may pass according to the direction of its travel lengthwise of therails.

The rails 2|, 22 may be given any suitable shape or cross-section,preferably somewhat angular,

as is better shown in Figure 1, thus to interfltwith the comers of theopeni ngs 23, 23 so that the latter may aid in supporting and alin'ingthe rails, and they may be secured in position in any suitable way.Since they preferably overhang both sides of the machine (see Figure 2)suitable brackets 24 may be employedto aid in supporting and bracing theoverhan' ing portions of the rails.

The overhang of the rails, at both sides of the machine is sufficient toaccommodate the carriage IS with its'magazine 20 and the web that issupported and fedupwardly therefrom, as is later described, in the twoextremes of travel web icrosswise rela- ,tive to the printing point. a;

The magazine 20 may be given any suitable construction, illustrativelyin the form of a box or tray-like structure, as shown in Figures 1 and2, and may have for its bottom thebase or bottom 25 of the carriage l9providedon ts-unider side with spaced rails 26, 21 for coactiorespectively with the spacedsupporting rails 21,322, and if desired andpreferably the coabting erails may be interrelated to each other in anysuitable way as by interposing roller or ball members 28 therebetween,to reduce friction and thusito make for greater ease of step-by-stepmovement of the structure in one direction and its return movement inreverse direction. I

Extending parallel to each other and upwardly from the base 25 of thecarriage l9 are two upright side frames 30 and 3|, thus forming part ofthe carriage l3, and substantially centrally of the magazine 20 andoverlying it members 30 and 3| have journaled therein two feed rollers.32, 33 suitably geared together, if desired, and provided with suitablemeans-such as the thumb or hand-wheels 34, 35 yieldable pawl and ratchetmechanism 36 whereby one or both of the feed rollers 32, 33 may beanal.- ually rotated. Also, the feed rollers are preferably arranged inany suitable manner to grip therebetween the web H, as shown in Figure1, and preferably to accommodate themselves to various thicknesses ofweb. Illustratively, for this latter purpose, the feed rollers 32, 33may be provided preferably each with a relatively heavy outer layer orsleeve 36, 31, respectively, of a resilient and yieldable material likerubber, the upper'wall 38 of the magazine 20 being cut away or providedwith a longitudinally extending opening 40 to expose the feed rollers32, 33 appropriately to receive the web I1 from the stack I 8 within themagazine 20.

The side frame members 3|, 30 are extended upwardlyas at 30 and 3|, asappears better in Figure 2, and at their upper ends the extensions 30,3| rotatably support feed rollers ll, 42, preferably arranged andconstructed the same as rollers 32 and 33 and hence having thumb orhand-wheels 43 and 45 with a ratchet mechanism 46 (Figure 2) and againbeing preferably arranged to yieldably grip the web therebetween, as byouter sleeve-like portions 41 and 48 of aresilient and yieldablematerial like rubber.

The two pairs of feed rollers 32-33 and 4 l- -n will thus be seen to bespaced vertically from each other and with the web IT brought up betweenthe rollers of each pair, the web may thus be supported with suitabletautness, generally in a vertical plane at a suitable point in which asat P (Figures 1 and 2) is located the printing point or the point towhich the type, preferably in the form of type bars, is moved to makethe printing v impression.

To facilitate charging of the pairs of feed rollers and to aid insupporting the web I! therebebetween the upward extensions 30 and 3| o1tween, I preferably provide guiding means which preferably the guideplates 50, 5| are curved or' made divergent at their lower ends tofacilitate entry of the web into the space between the guide plates 50,5| as the web passes out from in between the lower rollers 32, 33. Guideplate members 50, 5| extend upwardly to a suitable extent, as indicatedin Figure 1, and are held in position in any suitable wayas, forexample, by securing them at their vertical edges to the extensions 30'and 31 of the side frames 30, 3|, respectively, of the carriage l9,whence the guide plates 50, 5| also take part in strengthening orforming part of the carriage l9 forming virtually rigid cross ties theside frames. r

' The frame l6 may be built up in any suitable way and its end walls I Gand 16 apertured as at 23, 23, as above-described, are, furthermore,

cutaway or slit, as at 23' (Fgures 1 and 2) to form upward extensions ofthe apertures 23,23 of suilicient width to permit free movement throughthese slotted portions 23 of the upward extensions 30*, 3| of thecarriage, together with the parts carried by these extensions, suchasthe guide plates 50, BI and the lower rollers 32, 33,

while the top l6 of the casing I3 is also cutaway iFigure 2') andpreferably a back and forth along the rails 2 l 22, the apertured orslotted portions of the casing-like frame It, as

' just described, insuring freedom of movement of the various parts ofthe carriage therethrough.

In the upper portion of the frame l and one on each side of the plane ofthe web IT, as the latv ter is held or positioned for printing betweenthe ipper and lower pairs of rollers 52-33 and 4I-'-42, are supportedpreferably movable frames 54, 55 for supporting two sets of type bars ofwhich type bar B in Figure 1 is intended to typify or illustrate one setof typ bars associated with-and carried by the frame54 and of which typebar 3 is intended to typify the type bars associated with and carried bythe frame 55.

Frames 54 and 55 are preferably movably mounted and may be of "similarconstruction.

Thus, frame may have at its ends flanges or end parts like the parts 55"and 55 of Figurefi by which movability of mounting may be achieved, butpreferably in a manner to insure that the frame moves parallel toitself. For this latter purpose, I may utilize two pairs of parallellinks such as one pair of links 5|, 52, at one end of the frame 55, anda companion pair of parallel links (not shown) at the other end of theframe, these links being pivotally connected to thefram'e 55, preferablyby Way of the end parts 55 and 55 of the frame, while the other ends ofthe links are pivotally supported in th'e'ends l6 and I6 of thecasing-like frame I6. Suitable studs or pins, as indicated at 55 inFigure 1, may serve to form a pivotal support in the end walls for theparallel links. Likewise, vertically spaced studs or pins 55 and 61 inthe ends of the frames may conveniently serve to limit the upper andlower positions which the frame 55 may assume in the manner laterdescribed; in Figure 1 link 62 rests on the stop pin 55 and in coactionwith a similar stop pin (not shown) engaging the companion link (notshown) at the other end of the frame,.

frame 55 is dependably held in its lowermost possible position. If frame55 is moved upwardly, it moves parallel to itself and its uppermostposition is fixed by pin 61 and a companion pin (not shown) with whichlink 62 and its .companion link (not shown) are respectively broughtinto engagement.

In a similar manner, frame 54 is mounted for movement by two pairs ofparallel links of which, in Figure 1, links H and 12 are shown pivotallyconnected to the flange-like end part 5-l of the frame and pivoted tothe end member 16 of the frame by pins 13, 13, the end frame membersalso having verti ally spaced pins 15 and 11 for limiting or fixing theextreme upper and lower positions of the frame 54 just as the two-pairsof spaced p ns 56.51 function with respect to the frame 55 as abovedescribed.

At a suitable part of the frame 55, such as in Figure 1.

the lower part thereof and which is suitably constructed in any knownmanner for this purpose, are pivotally supported the various type barsof one set, so arranged that upon actuation the typecarrying endsthereof all move to the printing point P on the right-hand side oftheweb H. as

. seen in Figure 1; the type bars are preferably of substantially identcal or similar shape or conformation. like the type bar B of Figure 1,being illustratively and preferably constructed in the form of a leverpivotally carried by the frame 55 as by the axis pin 18. Each type baris in.

Accordingly, the type bars when at rest, as-' suming, for example, thehorizontal positionshown in Figure 1,- assume. a fan-like disposition,

therebeing provided interiorly of the upper portion'of the frame It andsuitably secured to the latter an arcuate bar 80 (Figures 1 and 2) preferably carrying a suitable upwardly exposed cushion 8|, like rubber orthe like, against which the outer ends of the type bars normally rest,as is clearly shown with respect to the type bar B The type bars, liketype bar lit of the set that is to the rear of the web [1, are suitablyshaped or conformed, in any suitable. or known manner. with preferablytwo letter or type formations, one for upper case and the other forlower case, but with the disposition of transfer material with-respectto the sheets of the web [1, as is later described, the letter ortype"formatio-ns, constructed to be-in relief, are the inverse of thetype forma-' vided with a suitably shaped type bar guide 82 (Figures 1and 2), into the preferably tapered slot of which each actuated type barenters to move its lower case letter or type formation to the printingpoint P. But upon shifting the frame 55 upwardly tothe limitdeterminedby the opposed studs 61, the type bars are similarly shifted upwardlyand each actuated type bar again enters the slot of the type bar guide82 and because of the shift the upper case type formation strikes at theprinting point P.

' The front type bar frame 54 is also provided with a type bar guide 83(Figure 1) preferably of similar construction to that above described.and to coact with the type bars like bar B also in the manner abovedescribed, there being within the frame IS an arcuated type bar rest 84provided with a suitable cushioning material 85 against which the typebars come to rest on their retrograde movement. The type bars of thefront set, however, such as type bar B carry type formations which arenot facsimiles in relief of their respective letters, numbers, symbols,or the like, but are, as are usual in typewriter construction, theinverse of their respective letters, numbers, or symbols, as is bettershown in Figure 3 where the type ibar B companion to the above-describedtype bar B is shown on a larger scale to bring out more clearly theinverse type formation in relief for the lower case letter e. and uppercase letter "E, and to show also the companion or coacting relationshipbetween the type formations on these companion type bars.

With the frame 54 in its lower position, actu- I ation of a type, barswings thelatter to bring the lower casety e formation to the printingpoint P, while shifting the frame 54 to its upper position is effectiveto bring the upper case type formation of any actuated type bar to theprinting point.

Thus, the type bars to the rear of the plane of the web I! are mountedto move their respective type formations the printing point P from oneside (the rear side) of the web I1, while the type bars on the other orfront side of the web I1 are mounted to move their type formations tothe same printing point P but from the other (the front) side of the webI1. Moreover, the type ,bar guides 83 and 82, as well as the formationof the type heads, are such that if two companion type bars, such as thebars B and B, carrying the type formations for the letter E," as showninFigure 3, are simultaneously actuated, their respective typeformations not only move to the same printing point P, but are inprecise opposition and alinement with each other, and if the two typebar'frames 54, 55 are simultaneously shifted, a similar relationship ismaintained'with respect to the other case of type formation of the twocompanion front and rear type bars. To achieve simultaneous orsynchronized actuation of front and rear type bars from the keyboard, Imay use any suitable form of mechanism, and in the drawings I haveshown, by way of illustration, one possible form of mechanism for thispurpose. Thus, in Figure 1, key 88 of the keyboard I5 is to actuate the"E type bars B and B and the connection between the key 86 and the typebars, illustratively a mechanical system of connection, may comprise akey lever 81 extend- I ing rearwardly along the lower part of the frameI8 to a pivot 88 at its rearmost end, key 88 being mounted at its frontend. A link 88 connects lever 81 to a lever 8| pivoted at an upper frontportion of the frame, as at 92: lever 82 is connected to the short armof type bar B by a link 93. 1

Accordingly, if key 88 is depressed to swing key lever 81 incounter-clockwise direction about the pivot 88, link 90 swings lever 8|in clockwise direction and through link 83 lever 8| swings type bar B tothe printing-position, the parts being suitably proportioned to insuresuitable velocity of movement of the type head of the type bar and henceto insure adequacy of force of. impact, the positions that these variousparts assume with the type head at the printing point P being shown inbroken lines in Figure 1.

Any suitable means may be employed to effect return to normal positionof these parts at suitable velocity, for example, a spring 84 anchoredto a suitable fixed part of the apparatus, such as a longitudinallyextending member 85 that extends, from end wall I8 to end wall I8 and,as shown in Figure 1, may serveto take part .in covering over the upperportion of feed roller 32.

When key lever 81 is depressed, as just described, it also actuatesgalever 88 which extends closely alongside of the-keylever 81, having itsforward end pivoted as at 81 at the front part of the frame with itsother end extending rear-- wardly where it is connected by a link 88,companion to link 88, to lever I88 pivoted as at |8| at a rear upperportion of the frame and connected by link I82 to the short arm of thetype bar 3*, a spring I83 secured to link I82 and to afixed frame partI84 that is companion to the frame part 85 and which overlies thecompanion feed roller 33. A pin and slot connection I85 between levers81 and 98, with-the pin on lever 98 and underlying the downwardly openslot portion of lever 81, insures actuation of one by the other and thevarious lever arms and parts are,

preferably suitably proportioned, preferably to be symmetrical orsimilar with respect to the actuating parts for the front type bars andthe actuating parts for the rear type bars, as toachieve not onlysynchronization of movement toward and impact at the printing point butalso of restora-' tion of the parts to normal or starting positions.Similarity of structural arrangement of these parts also facilitatesproduction and reduces cost of manufacture. Thus, levers 8| and I88 maybe of identical construction-and so also links 83 and I82, etc., etc.The mechanical connection between key lever 81 and lever 88 also insuresthat both front and rear mechanical systems together get the benefit ofany means employed to bring about proper and synchronized returnmovement of the parts, as byway of springs 84 and III,

or by the weight or over-balance of the type bars B B, for example. c I

Such a mechanical system of interrelating companion front and rear typebars, such as bars B and B to their individual or appropriate key, likekey 88, also simplifies manufacture, construction and maintenance,making for symmetry of arrangement and construction (compare, forexample, the linkages to the left of the line 2-2 of Figure l with thelinkages to the right thereof) and in such case the type bars of therear set with their respective numbers, letters, symbols, and the like,are mounted and carried in frame 55 but arranged symmetrically, withrespect to the plane of the line 2-2 of Figure 1, to the type bars ofthe front set carried in frame 54, and the latter set can convenientlybe arranged or grouped according to any one of several now standardarrangements in typewriter construction.

Thus, depressing any key, such as the key for the letter A, causes thesynchronous actuation of two A-bearing type bars to the printing point Pbut from opposite sides of the web I 1, and when shift in the case isrequired, type bar-carrying frames 54 and 55 are synchronously shifted.An illustrative system, preferably mechanical, for effecting such ashift may be like that shown in Figure l where links 8| and 1| of frames55 and 54, respectively, are extended to form levers, having connectedthereto links I88, I81 which extend downwardly along the rear and frontwalls, respectively, of 'the casing or frame I8 to the lower or bottomportion of the latter. Link I81 is connected to a key lever I88 whosefront end bears .the shift key III) and whose rear end is pivoted to theframe, as at I. Link I88 isconnected to a lever II! that extendsalongside of lever I88 toward the front part of the machine where it isprovided with a pivot ||3 secured to a suitable fixed part of the frameI8, such as its side wall I8, a suitable, preferably double acting,connection, such as the pin and slot connection I", being provided asbetween key lever I88 and lever II2.

Thus, depression of shift key 8 swings key lever I88 incounter-clockwise direction and swings lever H2 in clockwise direction,the lever arms involved being so proportioned that vertical links I81and I 88 partake of simultaneous and equal downward movements, thusswinging levers 1| and 8| in respective directions synchronously to movethe typebar ca y frames 54 and '55, respectively, into uppermostpositions as determined by the stop pins 11 and 81. If desired andsimilarly'vertical links m and I88 are duplicated; extending upwardlyfor connection with the ex-, tended portions of the links which arerespec tively companion to links 1| and 8|, such as link 83 of Figure 2;insuch case, key 8 is-preferably known type of mechanism may be employedtoeflect step-by-step movement of the carriage I9 in response to keyactuation. An illustrative form of mechanism may comprise a universalbar II3 that extends crosswise of and underneath all of the keybars 81which, with their companion levers, like lever 96, are preferablyarranged in the same respective horizontal planes, all of bars 81 beingpreferably pivoted coaxially with the pivot 88 and all of the levers 36being pivoted coaxially'with the shaft 91. Universal bar II8 has twoarms I I6 and H6 which extend to the rear wall I6 where suitablebrackets provide pivotal supports I20, I20 (Figures 1 and 2). Thus, theactuation of any-key lever depresses universal bar H8 which, by a linkI2I, is connected to a suitable carriage escapement mechanism generallyindicated at I22, whose pawl I23 permits the escapement wheel I24 torotate one increment in response to the return upstroke of universal barI I8, thus permitting pinion I25 to rotate throughout such an angle thatthe rack I26, carried by the carriage I9, that mates with it, advancesthe carriage I9 toward the left by a distance equal to the width of oneletter or symbol.

Any suitable means may be used to propel the I carriage I9 in thisstep-by-step movement, such as a spring-wound drum I28 (Figure 1)securedv at a suitable point to a fixed part, such as the under side ofrail 2| and having wound onto or off of it, depending upon the directionof travel of the carriage I9, a tape I30 whose one end is connected to adownwardly projecting stud or post I'3I on the carriage I9.

Thus, moving the carriage I 9 toward the right, as viewed in Figure 3,unwinds the tape I30 and stores energy in the spring within the drumI28, such stored energy subsequently winding the tape I30 upstep-by-step as permitted by the above-mentioned escapement mechanism.

A carriage release may be provided and that may comprise two key leversI32, I33, in the form of bell crank levers (Figure 1) pivoted as bystuds I34 and I35, respectively, to the side frames 30 and 3| of thecarriage; the vertical arms of these two levers extend downwardly belowthe bottom 25 of the carriage where they are rigidly connected to therack bar I26, suitable spring means I36 (Figure l) urging the levers andhence the rack bar I25 toward the pinion I25 and thus maintaining thetwo in mesh. But actuation of either carriage release lever I32 or I33against the action of the spring I36 and within the limits provided byspaced stops I31 and I38 moves the rack bar I26 out of mesh with thepinion I25.

With a mechanism of the above-described character, I may now effectprinting or typing and duplication in various ways. Thus, referring nowto Figures 4 and 5, let it be assumed that the web I] is made up ofplain sheets S, S S etc., of paper, in suitable number; in such case, Iprovide a multiple transversely extending transfer means or strip which,when the web I1 is first fed upwardly toward the feed rolls 4|, 42, hasits component parts interleaved or alternated with the sheets of the webI1; thus, this means may comprise strip or ribbon-like materialsimpregnated with or otherwise having applied thereto or'treated withsuitable transfer media and in a preferred arrangement, the transfermedium may be a materialsuch as is employed in the mak ing of so-calledcarbon paper, or as is employed for manifolding work, being indicated inFigure 4 by the reference character M. This medium v Mis carried bystrips T, TH-T', T etc., and preferably appears only on the back facethereof, as is indicated in Figure 4. The strips T, T T etc., may bemade of any suitablematerial, such as a paperof suitable tensilestrength, or synthetic materials, like Cellophane, etc. Strips T T"related, respectively. with their media M facing toward sheets 8 -8respectively, are preferably relatively narrow. The front strip T,however, which overlies the front sheet 8 of the web I! and which maytakethe form of so-called typewriter ribbon saturated or impregnatedwith a transfer medium, preferably is extended laterally, and preferablyon both sides throughout its length, as at C and 0, being throughout theregions or parts 0 and C free from transfer medium. Accordingly, if madeof paper, Cellophane, or the like, this front strip ('J ---TC carriesthe transfer medium on its back or under face throughout a widthcommensurate with the width of strips T, T, etc., the tape-like regionsof the medium M of all of these strips overlying each- .other and henceregistering excepting for the able arrangement of support and feedcontrol for such spools may be utilized.

By way of illustration, the spools I4I, I42 may be supported by bracketsI43 and I44, respectively, from the carriage upright extensions 30 and3|, respectively (see Figure 3), the center line or center plane of thealined and registering strips T, T T etc., extending horizontallythrough the printing point P to which, as above described, the type barsconverge in pairs from the two sides of the web IT. Any means (notshown) may be used to effect feeding or shifting of the compositetransfer strips in any suitable way, such as by a step-by-step feed ofone spool suitably synchronized with the step-by-step movement of thecarriage I9, as is known and understood in the typewriting art. Also,any suitable type of guide, particularly for the front strip T,analogous to the guide or support for a typewriter ribbon, may beutilized, and in Figures 1 and 5 such a guide is indicated at I45.

Accordingly, when the keys are depressed for lower case printing orreproduction, each depressed key effects a synchronized movement atsuitable power or velocity of two type bars, such as bars B and B(Figures 1 and 5) to the printing point, one type bar B carrying afacsimile type formation (see Figure-3), while the other, type bar B,for example, carries the inverse thereof, and the force or energy withwhich these two type forinations are moved toward each other, and henceagainst the respective sides of the composite web I'I, the two typeformations, being in accurate alinement and in registry throughout, onetype bar with its type formation acts as an anvil for the other type barwith its type formation, and each type formation coacts with the otherin effecting printing or transfer of the corresponding letter or symbol,such as the lower case 1etter e" on all of the sheets s s s etc. I

In this manner, greater fidelity of transferred outline of the letter,number, symbol, or the like,

is achieved than has heretofore been possible; the

power or pressure with which the composite web I I with its-interposedtransfer media i by the above-described action affected, insuresconcentration of the force or pressure and hence its dissipation onlythroughout the comparatively small total area represented by theeffective face of the type formation, and in this manner not onlybetwhere lower case is being produced, the upper case type formations,being in'the lower part of each type head, are inactive or'inefiectiveto cause a printing or transfer action for the region between them isdevoid of transfer medium M and the upper case type formation on thefront type bar B is screened or prevented from printing or like actionbecause of the portion C of the front strip which portion remainsinterposed between I that type formation and the web IT. I

When an upper case symbol or letter has to be reproduced, the shift keyor bar is depressed,

thus raising the type bar carrying framesi l and 55 at both front andrear of the web I! (Figure 1), whence depression of a type key iseffective to bring the upper case formation of both type bars to theline or point of printing which, as above noted, is coincident with thecenter line or center horizontal plane through the transfer two sectionsi'i' and li preferablyby way of suitable means to limit the verticalexpanse of the two sides of the web that are exposed to the type headsto areas or vertical widths commensurate with the vertical dimension ofthe two opposed type formations that are to do the printing. Such ameans may take the form of themember I46 of Figure 6, being somewhatlike a barof .suitablematerial, such as metal, hard 3 rubber, or thelike, extending crosswise or the web I!v with'its horizontal center linein registry with the horizontal .plane in which the printing point orline of directapproach to'each other of the two opposed type formationsand presenting to each half l1 and i'l of the web I1 aface whosevertical dimension is preferably only slightly in excess of the verticaldimension of the tallest type formation on any type bar. At its opposedends member I46 may be secured in any suitable way to theupright'extensions 30, 3! (Figure 2) ofthe carriage with its centralvertical plane coincident with the central vertical plane ofthe verticalportion of the web I! as the latter extends from the lower pair ofrollers32, 33

to the upper pair of rollers M, 42. The spools MI, 142 may in thisinstance carry a transfer stripor ribbon T, brought, as above described,across the printing point in front of'the front sheet S.

The member I48 may have any desired degree of hardness and of rigidity;for example, it may be relatively yieldable or flexible in a directionfrom the right to the left and vice-versa, as viewed in Figure 6, thusto permit, if so desired, a better equalization or distributionthroughout the sheets of the two web sections I1 and H of strips T, T,'1', etc., thus reproducing on the sheets S, S etc., the correspondingupper case I impression. During such action the two lower case typeformations, being at the upper ends of the two type heads (see Figure 3and Figure 5) are ineffective, being displaced upwardly beyond thealined-transfer strips T, T T etc., and the portion 0" of the frontribbon ortape now acting to screen the front sheet S from the lower casetype formation of the front type bar..

- I may, however, achieve the advantages of better and clearerreproduction and of increased capacity of copy'freproduction in otherways without departing from the scope or spirit of my invention. Thus,let it be assumed'that, as is current practice inmanifolding operations,the sheets S, S, S", etc., of the web II have their back faces treated,like so-called carbon paper, to carry the transfer medium. -In such caseI need not employ the tape-like interposed strips T T, T, etc., ofFigures 4 and 5, and hence utilize, by way of the spool Ill, I42, simplya plain typewriter ribbon, or the like, to eflect printing bythe fronttype heads onto the front sheet S. In such a way, in doing away with thecarrier strips T T T etc., for the medium M,

I can still further increase the number of copies."

But in such case I prefer to make suitable provision to preventundesired action or interference where each type head carries more thanone type formation, such as upper case and lower case, and hence I mayutilize an arrangement like that shown in Figure 6 where the web I'I,coming up from the feed rollers 32, 33 (Figure l) and through the guideplatesjll, Si, is subdivided into the pressures or forces exertedthereon by the synchronized type heads of the type bars; the greater therigidity in such direction, the less may be such distribution orequalization but good results are still achievable even if member 8 ismade relatively rigid.

By such a means, therefore, I am enabled to cause the'web I! to exposeforwardly and rearwardly, in the horizontal plane of printing, D rtionsof small vertical dimension commensurate with the vertical dimension ofthe type confor- 'mations, and thus I am enabled .to shift from uppercase to lower case and vice versa without allowing an unselected case oftype formation to interfere with the action of the selected case. I may,however, desire to shield the front'sheet S from the possibility of an,unselected case of type formation on a type bar and in such case theribbon or transfer strip T in advance of the front sheet S preferablyhas marginal portions G and C, as above described, to shield the web ina manner now clear, in view ofthe detailed description of such action inconnection with Figures 4 and 5. 1 1

Or, instead of utilizing a means like the member I46 of Figure 6, I mayutilize an arrangement shown in Figure 7 where I employ two printingplatens Iii and I52 for the front and rear sets of type bar s,respectively, positioning the two platens at the plane of printing withthe web [1 coming, for example, downwardly between the two platens,whence it is divided into two sections I! and which pass, respectively,aboutthe platens l5] and I 52 to merge in upward movement in two printedsections Il andill whence the sheets may be separated or united into asingle now printed batch. With such an arrangement the front type. bars,such as type bar B ,mi i shiftable in the manner above described for theselection of upper or lower case, the axis or line of printing beingcoincident with the plane or line through the axes of the two platensIII, III. I need employ a transfer strip or ribbon '1 only in advance ofthe front sheet S which may be in the form of an ordinary typewriterribbon proved printing and reproduction for manifolding I am enabled toachieve the reproduction of a greatly increased number of copies.Details and suitably supported in any known or suitable way, such as hasbeen indicated above by way of illustration. Here, again, the action ofthe front type bars and'the action of the rear type bars aresynchronized, the sheets 8-8 for example, of

section I1 of the web being printed by the front type bars, such as typebar 13 which carries type formations that are the inverse of theletters, numbers, or symbols, and at the same time and synchronizedtherewith the sheets, such as sheets 8 -8" of the other section II ofthe web, are operated upon by the rear type bars,-such as type bar B,which carry type formations that are facsimiles of the letters, numbers,symbols, or the like, to be reproduced. Thus, the capacity as to numbersof copies reproduced, at one operation is vastly increased over what hasheretofore been possible. Also, with such an arrangement, selection ofupper or lower case is followed by printing operations that ,are freefrom interference by unselected case on thea'ctuated type bars, theplatens again limiting, .due to their curvatures, the vertical range ofmultiple web that becomes exposed to the type formations.

The shift or selection of upper or lower case I may also carry on in away to avoid interference of printing or reproduction; thus, in-Figure 8is indicated largely diagrammatically a front type bar 13 and a reartype bar 18 but the type heads, carrying typeformations of the characterdescribed above and shown in Figure 3, have the type formations arrangeddifferently. Thus, type bar B has its lower case type e at the lowerportion of the type head, as at L and its upper case type E at the upperportion, as at 1?, while the type head of type bar B has its facsimiletype formations e and E arranged in reverse order, namely, the lowercase is at the upper portion as at L and the upper case is at the lowerportion as at L. In normal or lower case position, the type carriers 54,are vertically displaced from one another, that is carrier :54 is higherthan carrier 55, so that the lower case type formations L and L are injuxtaposition to each other when moved synchronously to the printingpoint. Thus, upper case type formations U and L move to the web I1 atrespective points that are free from juxtaposed support, so

. that no impression or transfer results. This is clearly shown inFigure 8.

To select upper case the shift key or shift bar is actuated to shift thefront type bar carrier 54 downwardly and the rear type bar carrier55-upwardly and thus to reverse the relative vertical displacement sothat now; when two mating or companion type heads are synchronouslydriven to the printing point, the upper case type formations L and L arein alinement for printing or reproduction, while lower case element Lbecomes displaced downwardly from the printing point and lower caseelement L is displaced upwardly, again so as not to interfere with theprinting and reproducing action of'the selected case. If desired, theribbon T employed, with the arrangement of Figure 8 may have marginalshield portions C and (J acting as above described in connection withFigure 5. I 7

Thus, I am enabled to achieve better and imand embodiments of steps andstructural elements of my invention may be widely varied according tovarious factors, such as the results desired or the purpose to becarried out. For example, while I have not mentioned the use of socalled"carbon paper, in sheet form, as interposed between successive sheets S,S etc., of the web I1, it is to be understood and it will be seen thatthe broad features of my invention are equally applicable to the use ofsuch interposed sheets of material bearing carbon or like transfermedium. Nor is my invention to be interpreted as limited to the use ofwebs of successive subdivisions andit will be seen also that theadvantages of my method and;apparatus may be carried out as in ordinarytypewriting practice where the sheets operated upon are not in web formand are usually, by way of illustration, letter size. Also, and asearlier pointed out, and as will be readily understood by those skilledin the art, various adjuncts or features common in the typewriter ormanifolding art may be utilized in conjunction with the broader featuresof my invention; for example, if it is desired to maintain registry ofthe various sheets of web by means other than the yielding pressure feedrollers 32-43 and 4I--42, various such other means are known in the art,and in Figure 6, simply by way of illustration, of such adaptability, Ihave indicated the feed rollers 4| and 42 as embodying pins I55positioned, for example,,at I

my invention are concerned, I may also and preferably do provide forflexibility and wide range of operation. Thus, referring again to Figure1, I may mount the pivot 91 for all of the levers 98. by which the reartype bars are actuated on a cofnmon mounting of any suitable form, suchas a cross-bar I51 arranged to be shiftable in a vertical direction as,for example, by guideways I58 arranged in, for example, the, end framewalls I0 and I6 and provide for a suitable manual control thereof. Thus,I may mount a cam I60, as by the stud I64, on the front of wall I6 to beswung by a handle IGI to cause its eccentric cam rim I60, engagedbetween two pins I02 and I63 on the carrier I51, to lower or :raise thelatter (see Figures 1 and 1') In normal position, under the control ofthe manual element I6I, the axis of the pivots 01 is in uppermostposition, as shown, and the action of the apparatus is as abovedescribed. But shifting the control IGI to swing cam I50 so as todepress the carrier I51 in its guides I50 moves the common axis or theaxes of pivoting of :all of the levers 96 downwardly to a sufficientextent to remove the pins I05 on the levers out of the range of actionof the slotted portions of their respective actuating key levers 81,whereupon ac- "tuation of the keyboard results in actuation of the fronttype bars, such as bar B the rear type bars, such as bar B, remaininginactive. Where such an arrangement is employed, a member like the partI45 of Figure 6 or a platen structure like that shown in Figure 7, ispreferably utilized so as to provide a backing to support the paper,whether it is one sheet or several sheets, upon printingor transferimpression when.v the type elements are actuated to effect printing ortranswhich the front type bars B are thus made active.

With such an arrangement, the apparatus can be readily accommodated tothe burden of work which particular circumstances may impose upon it.Thus, for lighter work of typing or of reproduction, the rear type barset may be put out of action and for heavier work, such as workrequiring the production 01 many copies, the

rear type bar set may'thus be quickly brought into action.

Thus, it will be seen that there has been provided in this invention amethod and apparatus Y in which the various objects hereinabove setforth, together with many thoroughly practical advantages, aresuccessfully achieved. It will be seen that the method and apparatus areof wide adaptability and that, though I have hereinabove mentioned thetypewriting and manifolding art fer impressions by a selected case oftype formations.

2. In a. typewriting machine, or the like, in

combination, a frame having a keyboard and two I sets of movable typeelements, means for supporting a plurality of 'sheets with transfermaterial between successive sheets and in relation to a printing pointor line, means supporting said two 'sets of movabletype elements so thatcorresponding type elements from each'set move to the said point or lineof printing from opposite I do not mean or intend to be limitedliterally to typewriting or manifolding as such and rather,

' of the mechanical features of'the above invention and as the artherein described might be varied in various parts, all without departingfrom the scope of the invention, it is to be understood that all matterhereinabove set forth, or shown in the accompanying drawingsis to beinterpreted as illustrative and not' in a limiting sense.

I claim: 1. In a typewriting machine, or the like, in combination, aframe having a keyboard and two porting a plurality of sheets withtransferv matesides of thecentral plane extending through'the sheets andmove toward each other in substantial alignment and juxtaposition, saidsheet-supporting means supporting said sheets with said central planeintermediate of said two sets whereby corresponding type elements fromeach set approach each other and said plurality of sheets from oppositsides of said central plane, mechanism for synchronously actuatingcorresponding type elements ofsaid two sets from respectivesets ofmovable type elements, means for supkeys of said keyboard, there beingalternated with said plurality of'sheets strip-like mate al bearingtransfer media, said type elements having each upper and lower case typeformations and means operable from said keyboard for effecting relativeshift between said sheet-supporting 'means and saidsets of ty e elementsto effect case selection, means for supporting said striplike materialso that each intersects the line of printing, said strip-like materialhaving alined edges spaced by such a distance from, the line of printingthat an unselected case type formation on an actuated type elementbecomes juxtaposed beyond said alined edges, there being a strip-likematerial in advance of the front one of said plurality of sheets havingan edge alined with said alined edges and having means free fromtransfer effect extending beyond its edge to shield said front one ofsaid plurality of sheets from the unselected case type formation of anactuated type element. l

3. In a typewriting machine, or the like, in combination, a frame havinga keyboard and two sets of movabl type elements, means forsuprialbetween successive sheetsrand' inrelation toa a printing point orline, means supporting said two sets of movable type elements so thatcorresponding type elements from each set move to the said point or lineof printing from opposite sides of the central plane extending throughthe sheets and move toward each other in substantial alignment andjuxtapositiomsaid sheet-supporting means supporting said sheets withsaid central plane intermediate of said two sets whereby correspondingtype elements from each set approach each other and said plurality ofsheets from opposit sides of said central plane, mechanism forsynchronously actuating corresponding type elements of said two setsfrom respective keys ofsaid keyboard, the type elements of said two setsbearing said inverse and facsimile type formations in upper and lowercase, means, controllable from said keyboard, for effecting relativeshifting between said sheet-supporting means and two sets of typeelements, thereby to effect selection of either upper or lower case, aribbon-like element carrying a transfer medium being interposed,adjacent an outermost of said sheets, in

' the path of movement of type elements to said sheet, and means forshielding those portions of said outermost sheet that are juxtaposed totype formations of unselected case from effecting a porting a pluralityof sheets with transfer material between successive sheets and inrelation to a'rpflntlng point or line, means supporting said two sets ofmovable type elements so that corresponding type elements from each setmove to the-said point or line of printing from opposite sidesof thecentral plane extending through the sheets and move toward each other insubstantial alignment'and juxtaposition, said sheet-supporting meanssupporting said sheets with said central plane intermediate of saidtwosets whereby corresponding type elements from each set approach eachother and said plurality of sheets from opposite sides of said centralplane, mechanism for synchronously actuating corresponding type elementsof said two sets from respective keys of said keyboard, and meanscon-trollable at will for making ineffective the type elements of one ofsaid sets.

.4. In a typewriting machine, or the like, in.

- combination, a frame having a keyboard and two sets of movabl typeelements, means for supporting a plurality of sheets with transfer mate-1 rial between successive sheets and in relation to a printing point orline, means supporting said two sets of movable type elements so thatcorresponding type elements from each set move to the said point or lineof printing from opposite assess;

sides of thecentral plane extending throush-the sheets and move towardeach other in substantial alignment and juxtaposition, saidsheet-supporting means supporting said sheets with said central planeintermediate of said two sets whereby corresponding type elements fromeach set approach each other and said plurality of sheets from oppositesides of said central plane, mechanism for synchronously actuatingcorresponding type elements of said two sets from respective keys ofsaid keyboard. said means for synchronously actuating the sets inresponse to actuationof keys in said keyboard comprising shiftabie meansoperated when shifted into one position to make one set of type elementsineffective and when shifted into another position to make both sets of.type elements synchronously effective in response to keyboardactuation, and means for controlling said shiftable means.

5. In, a typewrlting machine, or the like, in combination, a framehaving a keyboard and two sets of movabl type elements-means forsupporting a plurality of sheets with transfer material betweensuccessive sheets and in relation to a printing point or line, meanssupporting said two sets of movable type elements so that correspondingtype elements from each set move to the said point or line of printingfrom opposite sides of the central plane extending through the sheetsand movetoward each other in substantial alignment and juxtaposition,said sheet-supporting means supporting said sheets with said centralplane intermediate of said two sets whereby corresponding type elementsfrom each set approach each other and said plurality of sheets typeelements of said two fromopposite sides of said central plane, mechanismfor synchronously actuating corresponding type elements of said two setsfrom respective keys of said keyboard. said means for synchronouslyactuating thevtype elements of saidtwo sets in response to actuation ofkeys in said keyboard comprising two sets of devices, one for each setof type elements, said two sets of devices having. disconnectableoperative connection means, and means for controlling the latter.

-6. In a typewriting machine, or the like, in combination, a framehaving akeyboard and two sets of movabl type elements, means forsupporting a plurality of sheets with transfer material betweensuccessive sheets and in relation to a printing point or line, meanssupporting said two setsof movable type elements so that correspondingtype elements from each set move to the said pointer line of printingfrom opposite sides of the central plane extending through the sheetsand move toward each other in substantial alignment and juxtaposition,said sheet-supporting means supporting said sheets with said centralplane intermediate of said two sets whereby corresponding type elementsfrom each set approach each other and said plurality of sheets fromopposite sides of said central plane, mechanism for synchronouslyactuating corresponding type elements of said two sets from respectivekeys of said keyboard. said means for-synchronously actuating the typeelements of said two sets in response to actuation of keys in saidkeyboard comprising two sets of levers, one set for each set of typeelements and each set of levers comprising. a lever for each typeelement of its corresponding set of type elements, with selective meansfor causing or preventing actuation of one lever of one set by itscorresponding lever 0f the other set. I a

type formations that are of the respective symbols, means for'supportingprinting point or line, means supporting said two sets of movable tyrpeelements sown correspond ing type elements from each set move to thesaid i pointer line of printing from opposite sides of the central planeextending through the sheets i and move toward each other with theinverse type formationsubstantially aligned with and juxtaposed to thefacsimile type formation, the phirality of sheets being by saidfirst-mentionedsupporting means supported intermediate of-the two setsof type elements whereby the inverse and facsimile type formations ofcorrespondingtypeelements approach said plurality of sheets fromopposite sidesthereof, mechanism for synchronously. actuatingcorresponding type elements of said two sets from respective keys ofsaid keyboard, the type elements of said two sets bearing said inverseand facsimile typeformationsin upper and lower case, and meanscontrollable from said keyboard for efiecting relative'shifting betweensaid sheet-supporting means and said two sets of type elements, therebyto effect seleotion of either upper or lower casepandan elongatedbar-like member intersecting the line of printing and subdividing saidplurality of sheets into two groups, one on each side thereof, and

one for each of said sets of type elements 8. An apparatus fortypewriting or manifolding comprising two sets of corresponding andselectable type elements, the corresponding type elements of said twosets having respectively type formations that are the inverse and thefacsimile of the respectivesymbols, with meansgmo untingj them so thatselected corresponding elements with their respective inverse andfacsimile type formations move toward and approach each other alongpaths which at the printing point 3 always coincide in a line,whereby'thednverse" 50 type formation and the facsimile type formationof any selected corresponding type elements opere ate as anvils each forthe other, and means for supporting in asingle batch a plurality ofsheets with interposed suitable transfer media in a posi+ tion tointersect said line of approaching movements of said type elements atsaid printing point whereby said plurality of sheets and interposedtransfer media are compressed between the inverse ,and facsimile typeformations of selected corresponding type elements and each of saidtype' formations acts as an anvil for the other.

9. An apparatus for typewriting or manifolding comprising two typeelements, one having a type formation that is the inverse of the symbolit is to reproduce and'the other having a typeformation that is afacsimile of the same symbol, means mounting said two type elements forrelative movement so that one of them approaches the other with saidtype formations in alinement, and means for supporting a single batch ofsheets with interposed transfer media between. said two type elementsand in a position tobe compressed, upon said relative movement of saidinverse and facsimile formations, thereby and therebetween.

19.1.1.1, a typewriting machine, or the like, in

'7. In a typewriting machi or :thenhrmn combination; a frame having akeyboard and We sets of movable ime elementsgthe corres on n ty-peelements of "said two sets having respectively the inverseand facsim'ilesimile of the respective symbols, means for. supporting in a singlebatch a plurality of sheets with transfer material between successivesheets and in relation to intersect a printing point or line, saidsupporting means having means for effecting step by step progression ofthe plurality of sheets as a unit relative to said printing point orline, means supporting said two sets of movable type elements so thatcorresponding type elements from each set move to the said point or lineof printing from opposite sides of the central plane extending throughthe sheets and move toward each other with the inverse type formationsubstantially aligned with and juxta-' posed to the facsimile typeformation, whereby each type formation forms an anvil for the other,

the plurality of sheets comprising said batch being by saidfirst-mentioned supporting means supported intermediate of the two setsof type sponding indicia in registering relation with each other, theindicia impressed on one external sheet being the reverse of thatimpressed on the opposite external sheet and transferring the impressedindicia by the interposed transfer strata from one sheet to anotherthroughout the assembly.

13. An apparatus for producing multiple clear copies upon an assembly ofsuperposed record elements whereby the inverse and facsimile type Iformations of corresponding type elements approach said plurality ofsheets from opposite sides thereof and compress said batch therebetween,

and mechanism for synchronously actuating corresponding type elements ofsaid two sets from respective keys of said keyboard and to effectapproaching movements'of corresponding inverse and facsimile typeformations at respective rates to strike said batch substantiallysimultaneously from opposite sides thereof to effect compressiontherebetween of said sheets and transfer material. whereby each of saidcorresponding type formations acts as an anvil for the other.

11 An apparatus for producing multiple clear copies upon an assembly ofsuperposed record sheets having transfer material strata interposedtherebetween, including a pair of opposing type members carryingrespective inverse and facsimile type formations and having meansmounting them for movement into engagement with the opposite sides ofthe assembly to imprint thereon by pressure corresponding registeringindicia on opposite sides of the assembly fromwhich the impressedindicia is simultaneously transferred by said transfer material stratafrom opposite sides of the assembly to intermediate sheets thereof, andmeans for synchronizing the operation of the opp sing type members.

12. The herein described method of multiple clear duplicate copies ofinscribed indicia upon superposed sheets of record material havingtransfer strata interposed therebetween, including simultaneouslystriking definite character outlines on the opposite external sheets ofsuch j assembly and thereby impressing thereon corre-" .sheets havingtransfer material strata interposed therebetween, including a pair ofopposing type members carryingrespective inverse and facsimile typeformations and having means mounting them for movement into engagementwith the opposite sides of the assembly to imprint thereon by pressurecorresponding registering indicia on opposite sides of the assembly fromwhich the impressed indicia is simultaneously transferred by saidtransfer material strata from opposite sides of the assembly tointermediate sheets thereof,

means for supporting said superposed record sheets with said interposedtransfer material strata in a single substantially flat assemblyextending transversely between said opposing type members to presentsubstantially plane opposite sides'for respective engagement by saidopposed type members, and means for synchronizing the operation of theopposing type members.

14. An apparatus for producing multiple clear copies upon an assembly ofsuperposed record sheets having transfer material strata inter posedtherebetween,. including a pair of opposing type members carryingrespective inverse and facsimile type formations and having meansmounting them for movement into engagement with the producing oppositesides of the assembly to imprint thereon by pressure correspondingregistering indicia on o p ite sides of the assembly from which theimpressed indicia is simultaneously transferred.

by said transfer material strata from opposite sides of the assembly tointermediate sheets thereof, means for supporting said assembly ofsuperposed record sheets with said interposed transfer material stratain position between said opposed type members and having a bar-likemember extending through substantially the middle of the assembly ofsheets in a positicn between said opposing type members to thereby bulgethose portions of the opposite sides of the sheet assembly that areengaged by said opposing type members outwardly from the center plane ofsaid assembly, and means for synchronizin the operation of the opposingtype members to effect simultaneous transmission of the pressure exertedby said opposing type members to the respective sides of said bar-likemember and through the respective portions of said sheet assembly thatare bulged outwardly by said bar-like member.

STEPHEN HAINES PLUM. 2n.

